Determination of the force acting on biocompatible ferrofluid droplets in inhomogeneous magnetic field

Guba, Sándor; Horváth, Barnabás; Szalai, István

doi:10.1016/j.jmmm.2017.08.022

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…The results of the magnetic force measurements are shown in Figure 8. If the droplet is uniformly magnetized, then the body force depends on the V volume, the M magnetization of the sample, and the dHedx external magnetic field gradient as F=VMμ0dHedx, where μ0 is the permeability of vacuum [18]. As expected, with increasing magnetic field strength (and gradient) the force acting on the droplets is increasing for all composites.…”

Section: Resultssupporting

confidence: 53%

“…The magnetic force acting on droplets of the aqueous MHAp suspensions in an inhomogeneous magnetic field was measured with a custom built setup [18]. A disk-shaped silicone rubber sample holder (V=0.0730.25emcm3) was filled with MHAp suspension and placed between the asymmetric (planar and conical) iron poles of an electromagnet (VEB Polytechnik, Phylatex, Germany).…”

Section: Methodsmentioning

confidence: 99%

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Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Horváth

Rigo

Guba

et al. 2019

Heliyon

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During the biomedical and biotechnological applications of hydroxyapatite based magnetic biomaterials the response to various magnetic fields (i.e. change in flow behavior) plays a pivotal role in manipulating these materials. Numerous studies discuss the synthesis, characterization and possible applications of magnetic hydroxyapatite, however the number of reports related to the magnetic response is limited. In this study we investigated the response of aqueous suspensions of magnetite/hydroxyapatite composites with gelatin as an additive to homogeneous and inhomogeneous magnetic fields. Under homogeneous field the change in rheological properties was determined, and correlated with the composition of the composites. The effect of magnetite and gelatin content on the zero field viscosity and magnetic susceptibility were also evaluated. The response to inhomogeneous field was characterized by measuring the magnetic body force acting on droplets of the aqueous suspensions. We found that the formulation of the composites and the presence of additive largely affect the magnetic response.

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Section: Resultssupporting

confidence: 53%

Section: Methodsmentioning

confidence: 99%

Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Horváth

Rigo

Guba

et al. 2019

Heliyon

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“…In recent years, some emerging applications of magnetic fluid in biological and medical field, like drug delivery [12][13][14] and magnetic hyperthermia treatment [15,16], have aroused considerable attention. However, in the biomedical field, traditional oil-based magnetic fluid has many shortcomings due to the poor fluidity properties and the oil-based carrier liquid which cannot be employed in biological environment [17]. Under these circumstances, water-based magnetic fluid exhibits many advantages, for example, special fluidity and good biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Research on the effect of different surfactants on fluidity of water-based magnetic fluid

Cao

Zhang

et al. 2020

Smart Mater. Struct.

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In order to expand the range of applications of magnetic fluid, water-based magnetic fluid with different surfactants is synthesized and the property of fluidity has been intensively studied. Three kinds of surfactants (sodium dodecyl sulfate, oleic acid and polyethylene glycol) are used to synthesize three different magnetic fluids with the same magnetic nanoparticles and carrier liquid. Their microstructures and thermal stability of magnetic nanoparticles coated with different surfactants are characterized by transmission electron microscopy and thermogravimetric analysis. Results show that water-based magnetic fluid with sodium dodecyl sulfate agglomerates more obviously while magnetic fluid with polyethylene glycol keeps good dispersion. In addition, magnetic measurements reveal that all these magnetic fluids exhibit typical superparamagnetic behavior and the magnetic fluid using polyethylene glycol as surfactant maintains the specific saturation magnetization of ∼60 emu g −1 . What is more, shear stress and viscosity of these three magnetic fluids are measured by the rotational rheometer. The shear stress increases with the increasing shear rate while the viscosity decreases with the increasing shear rate. This indicates that water-based magnetic fluid has the property of pseudoplastic fluid. What is more, the viscosity of the magnetic fluid with polyethylene glycol as surfactant is lower than other two magnetic fluids and is prone to reach a steady state at a low shear rate in a short time.

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“…Another research hotspot for improving the biocompatibility of PEEK is the use of weak magnetic elds to promote biocompatibility. [14][15][16][17][18][19] Current research shows that magnetic eld can effectively promote bone growth, accelerate fracture healing, and treat bone nonunion. [20][21][22][23] Yan 24 studied the effect of static magnetic eld (SMF) on the bone formation of rat femur by a tapered rod made of magnetized and unmagnetized samarium cobalt.…”

Section: Introductionmentioning

confidence: 99%

Preparation and biocompatibility of Fe₅₀Ni₅₀p/HAP/PEEK biocomposites with weak magnetic properties

et al. 2019

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Determination of the force acting on biocompatible ferrofluid droplets in inhomogeneous magnetic field

Cited by 5 publications

References 13 publications

Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Research on the effect of different surfactants on fluidity of water-based magnetic fluid

Preparation and biocompatibility of Fe₅₀Ni₅₀p/HAP/PEEK biocomposites with weak magnetic properties

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Determination of the force acting on biocompatible ferrofluid droplets in inhomogeneous magnetic field

Cited by 5 publications

References 13 publications

Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Magnetic field response of aqueous hydroxyapatite based magnetic suspensions

Research on the effect of different surfactants on fluidity of water-based magnetic fluid

Preparation and biocompatibility of Fe50Ni50p/HAP/PEEK biocomposites with weak magnetic properties

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Preparation and biocompatibility of Fe₅₀Ni₅₀p/HAP/PEEK biocomposites with weak magnetic properties